Plan greenhouse floors, walkways, and potting sheds. Switch units, add waste, and price your project. See results instantly and export a tidy report today.
| Project | Shape | Inputs | Waste | Area Unit | Expected Use |
|---|---|---|---|---|---|
| Greenhouse Aisle | Rectangle | 6 × 1.2 m | 10% | m² | Anti-slip tiles |
| Round Patio Pad | Circle | Diameter 3.6 m | 12% | m² | Pavers over sand |
| Corner Shed Base | L-Shape | A 8×3 ft, B 6×2 ft, overlap 2×2 ft | 15% | ft² | Decking boards |
| Raised Bed Walkway | Multiple Rooms | 4x2, 3x1.5, 2x1 (m) | 8% | m² | Rubber tiles |
Use the calculator to size floors for patios, greenhouse aisles, potting sheds, and covered seating. Select a shape that matches the footprint, then enter measurements in one unit system. The tool converts values internally so you can display results in square meters, square feet, or square yards. This helps compare materials and supplier quotes consistently. Measure twice and note obstacles, because small errors can multiply across larger paved areas.
For corner pads and wraparound benches, choose the L-shape option. Enter two rectangle wings and subtract the shared overlap so you do not double-count. For complex pathways, split the area into simple rectangles and use the Multiple Rooms list. This method produces a reliable total while keeping field measurements simple and repeatable. Keep each sub-rectangle aligned with straight edges so your list matches placement.
Cutting around posts, edging, and drains typically requires extra material. Add a waste percentage to protect against off-cuts and breakage. The calculator multiplies your base area by the waste factor, producing an order-ready figure. For small tiles or pavers with many cuts, consider a higher allowance than for large-format boards. Document the chosen waste rate so future repairs use the same batch and pattern where possible.
Many flooring products are sold by the box, with coverage stated on the label. Enter coverage per box in the same area unit you selected for display. The tool estimates boxes required and lets you round up, round to nearest, or keep decimals. Rounding up is recommended to avoid job delays from shortages. Compare the box estimate against store minimum order quantities and plan storage for leftovers.
If you know the price per area unit, the calculator estimates material cost using the area with waste. Add brief notes such as surface type, color, or location, then export a CSV for spreadsheets or a PDF for sharing. These exports support clear purchasing and help track garden upgrades over time. Store exported reports with receipts to simplify warranty claims and seasonal maintenance planning.
For straight layouts, 7–10% often works. For patterns, diagonal cuts, or many obstacles, 12–15% is safer. Use a higher value for brittle tiles and small pavers.
Use L-Shape for a clear corner with two wings. Use Multiple Rooms when the footprint is irregular; split it into rectangles you can measure easily, then sum them.
Yes. Price per area and box coverage must match the selected display area unit. If you switch from m² to ft², update those values to keep estimates correct.
Material is usually sold in whole boxes. Rounding up reduces the risk of shortages from cutting waste, damaged pieces, or slight measurement errors that appear during installation.
Yes. Use Multiple Rooms and enter each zone as a separate rectangle line. Add paths, shed pads, and greenhouse aisles as individual lines to get one total area.
Exports include shape, units, base area, waste allowance, area with waste, and optional box and cost estimates. Notes are included so you can label projects and keep records.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.